Nix (language): Difference between revisions
imported>Malteneuss m small typo |
imported>Malteneuss m Improve with explanation |
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==== <code>with</code> statement ==== | ==== <code>with</code> statement ==== | ||
The <code>with</code> statement introduces the lexical scope of a set into the expression which follows. | The <code>with</code> statement introduces the lexical scope of a set into the expression which follows. This means that it brings all keys within that set into scope in that expression. So, you don't need to use the dot notation. | ||
Common usages are: | Common usages are: | ||
'''On top of expressions''': | '''On top of expressions''': | ||
Look at the following lib set: | |||
<syntaxHighlight lang=nix> | |||
lib = { | |||
... | |||
types={ | |||
attrsOf = ...; | |||
listOf = ...; | |||
str = ...; | |||
}; | |||
... | |||
} | |||
</syntaxHighlight> | |||
You will see the with statement a lot at the beginning of expression definition. Most of the time it is used to load the lib functions into the namespace for quick access. | You will see the with statement a lot at the beginning of expression definition. Most of the time it is used to load the lib functions into the namespace for quick access. | ||
<syntaxHighlight lang=nix> | <syntaxHighlight lang=nix> | ||